Title: Answer a survey about your willingness to participate in a mobile app referral activity Requester: Xitong Li [A1S0CB4G5T9FOR] (TO) TO Ratings: No TO (Submit a new TO rating for this requester) Description: Express your willingness to participate in a mobile app referral activity Time: 5 minutes Hits Available: 1 Reward: $0.40 Qualifications: Masters has been granted; Total approved HITs is not less than 1000; HIT approval rate (%) is not less than 95; Location is US 1 minute or less